1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.webcache;
24  
25  import com.liferay.portal.kernel.cache.PortalCache;
26  import com.liferay.portal.kernel.cache.SingleVMPool;
27  import com.liferay.portal.kernel.util.Time;
28  import com.liferay.portal.kernel.webcache.WebCacheException;
29  import com.liferay.portal.kernel.webcache.WebCacheItem;
30  import com.liferay.portal.kernel.webcache.WebCachePool;
31  
32  import org.apache.commons.logging.Log;
33  import org.apache.commons.logging.LogFactory;
34  
35  /**
36   * <a href="WebCachePoolImpl.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Brian Wing Shun Chan
39   *
40   */
41  public class WebCachePoolImpl implements WebCachePool {
42  
43      public static final String CACHE_NAME = WebCachePool.class.getName();
44  
45      public void afterPropertiesSet() {
46          _cache = _singleVMPool.getCache(CACHE_NAME);
47      }
48  
49      public void clear() {
50          _cache.removeAll();
51      }
52  
53      public Object get(String key, WebCacheItem wci) {
54          Object obj = _singleVMPool.get(_cache, key);
55  
56          if (obj == null) {
57              try {
58                  obj = wci.convert(key);
59  
60                  int timeToLive = (int)(wci.getRefreshTime() / Time.SECOND);
61  
62                  _cache.put(key, obj, timeToLive);
63              }
64              catch (WebCacheException wce) {
65                  Throwable cause = wce.getCause();
66  
67                  if (cause != null) {
68                      _log.error(cause, cause);
69                  }
70                  else {
71                      _log.error(wce, wce);
72                  }
73              }
74          }
75  
76          return obj;
77      }
78  
79      public void remove(String key) {
80          _singleVMPool.remove(_cache, key);
81      }
82  
83      public void setSingleVMPool(SingleVMPool singleVMPool) {
84          _singleVMPool = singleVMPool;
85      }
86  
87      private static Log _log = LogFactory.getLog(WebCachePoolImpl.class);
88  
89      private SingleVMPool _singleVMPool;
90      private PortalCache _cache;
91  
92  }